Molding jacket



July 15'. 19 24. 1,501,731

. J. A. SPERRY MOLDING JACKET Filed April 19, 1922 INVENTOR. JOHN A; JPERRYT A TTOFNEY.

Patented July 15, 1924,

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Be it known that I, JOHN A. SPERRY, of Mun'n's ville", county we Madison, and State of New York, have invented certainneyv; and useful Improvementsnn a. Molding/Jacket, of which the following is a specifieation.

This invention relates to jackets for sand molds, and one object of the invention is to provide a jacket which may be used to enclose the two or more parts forming the usual type of sand mold, so that these parts may be held against displacement during the pouring of the metal.

Another object of the invention is to provide a knock-down jacket of the type described, which may be placed about the several parts forming a sand mold, the jacket being so designed as to accommodate itself to any irregularities in the contour of the body of sand, whereby it may be readily placed in position.

Another object of the invention is to provide a jacket of the class described, which may be cheaply manufactured, composed of a few rugged parts which may be quickly knocked down so as to occupy but little space in storage, and which when in position shall be of suflicient strength to protect the molders from any explosion caused by the hot metal coming in contact with damp sand.

Other objects and aims of the invention, more less specific than those referred to above, will be in part obvious and in part pointed out in the course of the following description of the elements, combinations, arrangements of parts and applications of principles, constituting the invention; and the scope of protection contemplated will be indicated in the appended claims.

In the accompanying drawing, wherein I have shown a preferred form of embodiment of my invention:

Figure 1 is a view in side elevation of the assembled device; and

Figure 2 is a top plan of the said device.

Referring now to the drawing, wherein similar reference characters refer to similar parts in both views thereof, the reference character 1 designates a flat side plate pro vided on its outer surface with longitudinal ribs 2 Across the ends of the plate 1 are transverse ribs 3, provided with bosses 4, these bosses being drilled for bolts 5. Four plates similar to 1 are to be assembled to form a complete jacket, and the assembly is MOLDING meme-e Nmssawe ne up tigl: 7 permits considerable play between the overlapping ends of the plates. The method of assembly described is used at each corner, and in addition to the loose connection by means of the bolts, there are provided stops 7, 7, here shown as screws extending through suitably threaded apertures in the faces of the plates, and so arranged as to prevent eX- cessive sidewise motion of the plates.

. It will be noted on reference to Figure 1 that the plate is in the form of a trapezoid, whereby the inner faces of the plates when assembled in a jacket produce an axial taper. The purpose of this design will be readily appreciated. inasmuch as it is to be understood that with two or more parts of the sand mold in position upon the floor, the flask having been removed, the jacket is to be slipped thereover, so as to serve as a protection and support for the sand when the hot metal is introduced.

By the loose assembly so provided for, together with the taper, the jacket will readily seat itself in position on the tapering contour of the bodies of sand, it being understood that the flask is given a taper in order that it may be readily withdrawn from the sand, and the jacket must correspond in a general way to the shape of the flask.

It will be readily seen that I have pro vided a simple and effective jacket for the purpose described. The ribs serve a double purpose, inasmuch as they not only strengthen the broad flat plates, but also serve as a means by which the jacket may be readily handled. l Vhile the assembly is loose, so that the parts of the jacket may have considerable play, whereby to compensate for any irregularities in the shape of the bodies of sand upon which the jacket is to be placed, the plates cannot be pulled apart, and thereby serve as a protective sheath in the event that large quantities of steam are formed when the molten iron is introduced,

The jacket may be readily disassembled, and for shipping purposes may be sent in a knocked down condition, the plates occupying very little space when laid flat.

As many changes could be made in this construction without departing from the r; .w'rh-y EH1 '1 s"; "1 m. I 1 'ng-a pairtotpla es:atright es.- 9. 1 other with: e ossesrl in. ry-i l 3 belt a lI rns ed throngh-ithei b lii'eng t the e b s es} and ?-1-S dr w can:

' notidrawn -=but as-= a indica ed in Eignre e1 1;

scope of the following claims, it is intended that all matter contained in the above de-- scription or shown in the accompanying drawing shall be interpreted as illustrative only and not in a limiting sense.

Having thus described my invention What I claim as new and desire to secure by Let-V ters Patent is:

l. A device of the class described compris ing a plurality of plates, adapted to be assembled in successively overlappingrelation, fastening devices in; the ends of said plates intermediate the edges thereof and a pair of stops disposed in the-overlapping end of each 1 of said plates and adapted to overlie the plate secured to said overlapping end.

2. A ClGX'iCB of the class. described com.- prising a plurality of plates, adapted to be assembled in successively overlapplng relation, fastening bolts adapted to be passed ture in the presence of two Witnesses:

JOHN A. SPERRY.

l Vitnesses Honnmoen G. GREENE, FRED HULL. 

